Subunit

Samba 4 is slowly starting to use more and more [[1]].

At the moment the main testrunner and a lot of the testsuites will output subunit. There are a still things I would still like to achieve:

* Ability to run single tests (--idlist) in selftest
* Ability to run single tests (--idlist) in smbtorture
* Subunit formatting compatible with the main Subunit protocol
* Switching over to the main subunit protocol parsers